/*
 * Copyright 2010 Ning, Inc.
 *
 * This program is licensed to you under the Apache License, version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at:
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package org.asynchttpclient;

import io.github.artsok.RepeatedIfExceptionsTest;
import io.netty.handler.codec.http.HttpHeaderValues;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;

import java.io.IOException;
import java.util.concurrent.Future;

import static io.netty.handler.codec.http.HttpHeaderNames.EXPECT;
import static org.asynchttpclient.Dsl.asyncHttpClient;
import static org.asynchttpclient.test.TestUtils.SIMPLE_TEXT_FILE;
import static org.asynchttpclient.test.TestUtils.SIMPLE_TEXT_FILE_STRING;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

/**
 * Test the Expect: 100-Continue.
 */
public class Expect100ContinueTest extends AbstractBasicTest {

    @Override
    public AbstractHandler configureHandler() throws Exception {
        return new ZeroCopyHandler();
    }

    @RepeatedIfExceptionsTest(repeats = 5)
    public void Expect100Continue() throws Exception {
        try (AsyncHttpClient client = asyncHttpClient()) {
            Future<Response> f = client.preparePut("http://localhost:" + port1 + '/')
                    .setHeader(EXPECT, HttpHeaderValues.CONTINUE)
                    .setBody(SIMPLE_TEXT_FILE)
                    .execute();
            Response resp = f.get();
            assertNotNull(resp);
            assertEquals(resp.getStatusCode(), HttpServletResponse.SC_OK);
            assertEquals(resp.getResponseBody(), SIMPLE_TEXT_FILE_STRING);
        }
    }

    private static class ZeroCopyHandler extends AbstractHandler {

        @Override
        public void handle(String s, Request r, HttpServletRequest httpRequest, HttpServletResponse httpResponse) throws IOException, ServletException {

            int size = 10 * 1024;
            if (httpRequest.getContentLength() > 0) {
                size = httpRequest.getContentLength();
            }
            byte[] bytes = new byte[size];
            if (bytes.length > 0) {
                final int read = httpRequest.getInputStream().read(bytes);
                httpResponse.getOutputStream().write(bytes, 0, read);
            }

            httpResponse.setStatus(200);
            httpResponse.getOutputStream().flush();
        }
    }
}
